====== Install X11vnc server ======

This version of the VNC server allows to remote control the real display, e.g. display :0

==== Install x11vnc ====

  apt-get install x11vnc

==== Settings ====

Create the file /home/username/.x11vncrc with the following content:
  #x11vnc command line options
  # display :0
  rfbport 20000
  usepw
  forever
  loop
  bg

Create /home/username/.kde/Autostart/startX11vnc:
  #!/bin/sh
  killall x11vnc &>/dev/null
  sleep 10
  x11vnc

Make sure it has the correct ownership and permissions:
  chown username:username startX11vnc
  chmod 750 startX11vnc

Start x11vnc manually the first time to allow for setting up the vnc server password. Afterwards, x11vnc will start on default when kde is starting up.
  cd /home/username/.kde/Autostart/startX11vnc
  ./startX11vnc